Allis Chalmers Model U
Series: Other models
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The Allis Chalmers Model U is a tractor made by Allis Chalmers. It runs on a four-cylinder engine.
The gearbox is a manual unit.
It runs on petrol; the engine is water-cooled. As standard, it runs on 28x6 steel or 6.00x16 rubber tyres at the front and 42x11 steel or 12.75x24 Rubber at the rear.
Technical data
Engine
| Engine make | Allis-Chalmers or Continentalcorrect |
|---|---|
| Fuel | petrolcorrect |
| Power | 20/31correct |
| Cylinders | 4correct |
| Displacement | 284 / 300 / 317 cu inchescorrect |
| Bore | 4.25 / 4.375 / 4.5 inchescorrect |
| Stroke | all 5 inchescorrect |
| Naturally aspirated | naturally aspiratedcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 118.5 inches (3000 mm)correct |
|---|---|
| Width | 63.1 inches (160 cm)correct |
| Height | 53.5 inches (135 cm)correct |
| Unladen weight | 4, 600 lbs (2086 kg])correct |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | manual gearboxcorrect |
| Gearbox make | Allis-Chalmerscorrect |
| Forward gears | 4correct |
| Reverse gears | 1correct |
| Front tyres | 28x6 steel or 6.00x16 rubbercorrect |
| Rear tyres | 42x11 steel or 12.75x24 Rubbercorrect |
Origin and approval
| Plant | USAcorrect |
|---|
Frequently asked questions
What engine does the Allis Chalmers Model U have?
4 cylinders, Gasoline.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
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This page carries 24 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
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Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.